Makalah TKJ

CHAPTER IINTRODUCTION1.1. BackgroundAn age of increasingly advanced and developing the internet can not be separated from human life, ranging from children to the elderly can all access the internet. Internet is also very useful if used properly, for example, to seek knowledge and communicate remotely.With the internet now students can easily get learning materials, students no longer have to bother buying textbooks, because the Internet has many blogs and websites that menyidiakannya. Internet is also very useful to communicate, if antiquity using letters to communicate and could be months until the new destination, now with the internet we can be able to use your e-mail (Electronic Mail) to communicate and in just seconds the letter has been able to purpose.As described above description Internet is very useful in human life, therefore it also takes a good surf media and is easy to use Contonya modem Venus VT-80N.

1.2. Destinationa. Complete the task which is a series of papers on the working practices of the industry.b. As presented at the seminar.c. Sharing knowledge about the modem.d. Helps the reader to choose a good quality modem.

















CHAPTER IIINTRODUCTION MODEM2.1. Understanding ModemModem is short for Modulator Demodulator. Modulate is the process of translating the data from digital to analog so it can be transmitted. Demodulate the contrary, the process of translating from analog to digital. Modulator is the part that converts the signal information into the carrier signal (Carrier) and ready to be delivered, while the demodulator is the part that separates signaling information (that contain data or messages) of the signal (carrier) that received that information can be received well. Modem is a combination of both, meaning that the modem is a two-way communication tool. Each remote communication devices generally use a two-way section called "modem", such as VSAT, Microwave Radio, and so forth, but generally the term is better known as the modem hardware that is often used for communication on the computer. Data from the computer in the form of digital signals given to the modem to be converted into an analog signal. Analog signals can be transmitted through multiple media such as telephone and radio telecommunications.

2.2. Types of Modem1. ADSL ModemADSL modem or DSL modem is a device used to connect a computer or router to a telephone line, to use the ADSL service. As with other types of modem, ADSL modem is a transceiver. Also called a DSL Transceiver or ATU-R. Singkata NTBBA (Broad Band Adapter Network Termination, Network Termination Broad Band Access) are also common in some countries.2. Cable ModemCable Modem (Cable Modem), is the hardware that connects the PC with a cable TV connection. Cable networks can be used to connect to the internet with a maximum speed of 27Mbps downstream (download speed to the user) and 2.5 Mbps upstream (from the user upload speed). In order to use the cable modem, the computer must be equipped with an Ethernet card (Ethernet card).a. Modem 3GPb. GSM Modemc. CDMA Modemd. Analog Modem
2.3. CDMA Modem Venus VT-80NSpecifications Modem Venus VT-80N provider:

    
With RUIM CDMA 200 1x 800 Mhz frequency band
    
Using Chipset: Qualcomm
    
Speed: UP to 230.4 Kbps (Averging 60 to 100 Kbps)
    
Operating System: Windows 2000 SERVER / XP / Vista / Win 7
    
Standard USB Port: USB 2.0 / 1, 1/1.0
    
Power supply: USB (4.5 V - 5.5 V)
    
The operating temperature: - 30 ° C - 60 ° C
Modem features Venus VT-80N:

    
Support plug & play USB
    
SMS can do
    
Intirnet access speed up to 230.4 Kbps
    
Using technology R-UIM (Removable User Identity Modem), thereby reducing the risk of piracy numbers.






CHAPTER IIISurf BY USING CURRENT MODEM VENUS VT-80N
3.1. How to Install Modem Venus VT-80NInstalling this modem does not need to use the CD Driver, because the driver is directly contained within the modem, and the following are the installation steps:· Put the card from the modem to the CDMA operators.Gb.3.1.Memasang card into the modem


· Plug the modem into the USB port on your PC or laptopGb.3.2. Plug the modem to the PC· Once the modem plugged the modem will run and the autoplay window will appear as shown below.Gb.3.3. installation of the modem driver· If it appears the windows live installation as shown above we follow the steps by pressing the "NEXT", "NEXT", "NEXT", "INSTALL", then "FINISH".· If the installation is successful it will display the Wireless Card program as shown below.Gb.3.4. Wireless Card Program3.2. Setting up modem Venus VT-80N· Select the settings menu.Gb.3.5. Setting Modem Venus VT-80N.· Select the PROFILE DUN, adjust the profile and select the card that we use.Gb. 3.6. Choose profile.· If there is no profile in accordance with the cards that we use, we also can create their own profile by:ü Select the "NEW".ü Fill Profile Name.ü APN emptied.ü Username: content according to your card settings.ü Password: password you specified the contents fit.ü Dial Number: # 777 contentü then click "SAVE" and then "SET AS DEFAULT".· Then click CONNECT to connect to the internet.
CHAPTER IVCLOSING
4.1. Conclusion1. Modem is short for Modulator Demodulator. Modulate is the process of translating the data from digital to analog so it can be transmitted. Demodulate the contrary, the process of translating from analog to digital.2. Types of Modem:ü GSM Modemü CDMA Modem3. Modem Venus VT-80Nü Modem Venus VT 80N is a CDMA modem type.ü Iinstalasi modem venus VT-80N is very easy to do because of the way the installation is the same as the other modem and also because it does not require a modem venus Venus CD Driver.ü To set the modem Venus VT-80N we just choose the profile according to the service provider (operator) that we use.


4.2. Suggestion1. In order to obtain comfort and smoothness in the surf is not only the type and brand of modem that should be considered but the service provider (operator) should also be considered. Pick a service provider who charge terjangakau but also have a good quality.2. For younger siblings who will carry prakerin class, look for science supplies penetahuan about computer repair as much as possible, so that when undergoing prakerin is instantly ready for work.



 
Download his complete early Aja Broooo SEDOOOOOOOOOOOOOOOT Mas ..!!Posted by Fauzi at 5:49 sandayuhan No comments:Email This BlogThis Share to Twitter Share to FacebookPerform Maintenance PC Components
CHAPTER IINTRODUCTION
1.1. BackgroundThe number of computer users who are not informed about how to take care of the computer components as well as the lack of awareness of the importance of taking care of computer components. Here we not only know how to wear it, but also know how to take care of him.Actually there are some fundamental things that we often forget to do with how to care for the computer components that can cause damage to the computer.
1.2. Aims and ObjectivesThe intent and purpose of this paper is:· Completing tasks paper is part of the task of Industrial Employment Practices (Prakerin).· Sharing insights and experience to the reader about how to and the importance of taking care of computer.



1.3. Limitation Problem
Since the number of people who do not understand about computer maintenance, the authors are interested to make it as a writing paper entitled "TAKING CARE PC COMPONENTS".



CHAPTER IIDESCRIPTIONA. Materials and Equipment Required
Required to perform computer maintenance materials and equipment, such as:
1. Mini Vacuum CleanerVacuum cleaner easier and cleaner than the brush. At the end of the mini vacuum cleaner equipped with a brush with different sizes intended to fit the narrow angle wide-angle on the component. This tool is ideal to use for cleaning the circuit on the mainboard and in the corners of the computer case.



Figure 1. Mini vacuum cleaner





2. Dry and Liquid fabricFigure 2. Dry cloth and cleaning fluid
Dry cloth or paper towels used to clean liquid which may result softdrink, ink or rain water that is fresh or not dried yet. Liquid manure is very dangerous if not immediately cleaned because the dirt types can deliver currents that can cause a short circuit or fatal damage to PC components. While cleaning fluid used to clean the stains or dirt that has dried up like a splash of ink printer.3. BrushBrush is used to clean the equipment dust or insect nests. Besides brush is also used to clean the dust cover on fentilasi casing. Brush can also use to clean the heatsink fins on the motherboard and processor.Figure 3. Brush

4. Disk CleanerFigure 4. Disk CleanerDisk cleaner is used to clean the head of diskdrive of the influence of dust or dirt on the floppy drive head. Disk cleaner consists of cleaning fluid and a piringannya floopydisk replaced with tissue paper.

5. CD CleanerCD cleaner works to rub the dusty or dirty with cleaning fluid by utilizing round. Different CD cleaner disc cleaner to just lie on the form on cd cleaner using a small brush or fins mounted on the disk.Figure 5. CD Cleaner6. ScrewdriverScrewdriver is an essential equipment for the computer technician, because the technician is able to open the device and remove the components in the PC.Figure 6. Screwdriver




7. PliersTypes of pliers for the purposes of maintenance technicians in performing PC components are shark pliers and combination pliers. Tang shark is widely used to hold the head of a small screw or jumper. As for the combination pliers used to cut the cable and other purposes.Figure 7. Pliers





B. PC COMPONENTS1. CasingFigure 8. CasingCasing is a strength and beauty of a computer is physically located in the PC casing.2. CD-Rom and CD-RWCD-Rom or CD-RW is a tool that is used to read and write data to a CD.Figure 9. CD / DVD Rom




3. Hard DiskPicture 10. Hard drive
Hard disk is the important component, because the operating system and all the programs along with the data stored in the hard disk.4. MotherboardMotherboard is a place of all computer components installed. Motherboard is used to connect the components with one another.Picture 11. Motherboard

5. Power SupplyPicture 12. Power supply

Power supply is the heart of a computer, because all the power source of the computer components supplied from the power supply.6. CPU (Central Processing Unit)This component is the brain of the computer, depending on the processor speed and intelligence of its speed.Picture 13. CPU



7. MemoryRAM is the PC main memory and acts as a temporary storage device in the system. The greater capacity of the RAM the faster and stable program is run.Picture 14. RAM


CHAPTER IIIDISCUSSION
A. CasingProblems often occur in case the computer is dust carried by the fan casing computer itself or insect nests. Enough with the brush or with a mini vacuum cleaner to clean it.B. CD-Rom and CD-RWProblems that often interfere with the CD-Rom and CD-RW lies in the optic or lens. Steps used to clean the optic or lens from dust or other debris is to use a CD cleaner. The cleaning steps are as follows: 1. Operate the computer system, 2. Insert the CD cleaner, 3. CD will spin and brush cleaner or fins attached to the disc or to brush optic disc or the lens on the CD-Rom or CD-RW.C. Hard Disk
· For the treatment of the hard disk of the hardware side: need to add a fan to reduce the heat on the hard disk (7200 rpm upwards). In addition it should be noted the data cable settings for air circulation can run smoothly.· For the treatment of the hard disk of the software: using scandisk, and disk defragmenter. Scandisk is a tool that is used to examine the structure of the file system, the file location table (file allocation table), and can be to determine whether there is bad sectors. Scandisk will run automatically each start if the computer does not shut down or power failure occurs. Disk Defragmenter is a tool that is used to regulate the structure or layout of the file so that it will reduce the fragmentation of a hard disk space. Disk defragmenter needs to be done regularly it will improve system performance and hard disk space.
D. MotherboardFeatures offered by motherboard is very diverse ranging from onboard soundcard, onboard LAN, onboard VGA and many other features. The more features of the motherboard, the more heat is generated by the motherboard. Maintenance performed on the motherboard is to facilitate the circulation of air in the system so that the temperature is stable. Because the connection of the various components of the motherboard where the cables need to be connected with a cable tie tied, but will add a neat also will make the air circulation becomes smooth. To interference from dust and insects nest adequately cleaned with a brush or vacuum cleaner to adjust the brush size mini on a tight angle, not to interfere with the installed components, such as RAM and processor.E. Power SupplyCare needs to be done to take care of the power supply is with respect to the smooth fan on the power supply. Because the fan is able to reduce the heat in the power supply. Also need to add a tool that is often called a voltage stabilizer, because with this tool will lighten the work of the power supply so that it will reduce the heat emitted by the power supply.F. CPU (Central Processing Unit)To care is to pay attention to the processor fan layout so that air can spin smoothly. Then the processor fan should be selected with a high rotation (at least 5400 rpm) and also need to be selected heatsink with good heat conducting material, such as copper and aluminum. If you are removing the processor do not forget to always apply heat conduction silicon grease to be more fluent.G. MemoryTo clean corrosion due to the RAM of a hand can be done by using a cleaning fluid or rubber eraser simply by rubbing the legs of RAM. It also needs to consider the installation of the RAM slot, embedded RAM is necessary to ensure perfectly because if not, then in addition to the RAM is not detected by the system can also result in damage to the RAM.Picture 15. RAM Cleaning with cleaning fluid



CHAPTER IVCLOSING4.1. Conclusion1. Not too many programs that run when the computer starts working.2. Never unplug peripherals from the computer when the computer is working.3. UPS prevents your computer from damage caused by excessive voltage / reduced. At the time of power failure does not mean the computer is turned off according to the procedure.4. Periodically clean the computer of dust attached by using a paint brush, soft cloth and air atomizer.5. Living off the computer according to the procedure. Do not even immediately unplug the power cord on the computer while the computer is operating, it is also an absolute requirement applies to computer "hangs" though. This act is very dangerous for the stability of Power Suply computer.6. Perform Scandisk and Defragmenter once a month. This will keep your hard drive healthy and mencegak damage.7. Perform a virus scan on a regular basis.4.2. Suggestions· Take care of the computer.· Keep at least one day must be Computer literate.
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